Hello all, were in spain & driving to see friends in San Miguel de la salinas,when there was a sudden bang from the rear end.I intiallly thought I'd bottomed out on to the spare wheel casing due to a shallow dip in the road but after a short while noticed a scraping noise every time I went over a road hump.We have a Bessie 760 on an alko chassis. Just wondering if a torsion bar had snapped . There is no signs of sagging on one side & the ride feels normal. Any thoughts ??.